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Jsf 2,在数据表中显示验证消息

转载 作者:行者123 更新时间:2023-12-02 16:16:15 24 4
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我在显示由 ui 组件触发的验证错误时遇到问题,这些错误是嵌套在数据表内。

这是 xhtml 页面,其中包含一个带有静态上部的表单,可以在其中输入地址。

下面显示了订单商品,用户可以在其中输入他们想要订购的商品数量。这些项目是从数据库表中检索并显示在数据表中。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">

<ui:composition template="../templates/_standard.xhtml">

<ui:define name="pageHeadline">
#{msg['supplies.module_headline']}
</ui:define>

<ui:define name="pageContent">

<h:form id="supplies" styleClass="editForm" rendered="#{!suppliesHandler.sent}">
<h:panelGrid
columns="2"
columnClasses="tdLabel,tdValue"
rowClasses="row"
styleClass="leftPane"
>

<!-- row 1 -->
#{msg['supplies.account']}:
<h:panelGroup>
<h:inputText id="account" value="#{supply.contact.account}" tabindex="1" styleClass="text"/>
<h:message for="account" styleClass="error"/>
</h:panelGroup>

<!-- row 2 -->
#{msg['supplies.company']}:
<h:panelGroup>
<h:inputText id="company" value="#{supply.contact.company}" tabindex="2" styleClass="text"/>
<h:message for="company" styleClass="error"/>
</h:panelGroup>

<!-- row 3 -->
#{msg['supplies.street']}:
<h:panelGroup>
<h:inputText id="street" value="#{supply.contact.street}" tabindex="3" styleClass="text"/>
<h:message for="street" styleClass="error"/>
</h:panelGroup>

<!-- row 4 -->
#{msg['supplies.postcode']}:
<h:panelGroup>
<h:inputText id="postcode" value="#{supply.contact.postcode}" tabindex="4" styleClass="text"/>
<h:message for="postcode" styleClass="error"/>
</h:panelGroup>

<!-- row 5 -->
#{msg['supplies.city']}:
<h:panelGroup>
<h:inputText id="city" value="#{supply.contact.city}" tabindex="5" styleClass="text"/>
<h:message for="city" styleClass="error"/>
</h:panelGroup>

</h:panelGrid>

<h:panelGrid
columns="2"
columnClasses="tdLabel,tdValue"
rowClasses="row"
styleClass="rightPane"
>

<!-- row 2 -->
#{msg['supplies.contact']}:
<h:panelGroup>
<h:inputText id="contact" value="#{supply.contact.contact}" tabindex="6" styleClass="text"/>
<h:message for="contact" styleClass="error"/>
</h:panelGroup>

<!-- row 3 -->
#{msg['supplies.phone']}:
<h:panelGroup>
<h:inputText id="phone" value="#{supply.contact.phone}" tabindex="7" styleClass="text"/>
<h:message for="phone" styleClass="error"/>
</h:panelGroup>

<!-- row 4 -->
#{msg['supplies.email']}:
<h:panelGroup>
<h:inputText id="email" value="#{supply.contact.email}" tabindex="8" styleClass="text">
<f:validator validatorId="com.abc.myproduct.be.ui.validator" />
</h:inputText>
<h:message for="email" styleClass="error"/>
</h:panelGroup>

<!-- row 5 -->
#{msg['supplies.fax']}:
<h:panelGroup>
<h:inputText id="fax" value="#{supply.contact.fax}" tabindex="9" styleClass="text"/>
<h:message for="fax" styleClass="error"/>
</h:panelGroup>

</h:panelGrid>

<div class="spacer"></div>

<h:dataTable id="items"
styleClass="listing_large"
value="#{supply.supplyItems}"
headerClass="heading"
var="item">
<h:column>
<f:facet name="header">
#{msg['supplies.id']}
</f:facet>
<h:outputText value="#{item.supply_id}" />
</h:column>
<h:column>
<f:facet name="header">
#{msg['supplies.amount']}
</f:facet>
<h:inputText value="#{item.amount}" id="amount" styleClass="text" size="3" maxlength="3" style="width:50px"/>
</h:column>
<h:column>
<f:facet name="header">
#{msg['supplies.description']}
</f:facet>
<h:outputText value="#{item.description}" />
</h:column>
</h:dataTable>

<div><br/>
<h:messages globalOnly="true" layout="table" styleClass="error"/>
</div>

<h:panelGrid
columns="1"
columnClasses="tdLabel,tdValue"
rowClasses="row">

<!-- row 2 -->
<h:panelGroup>
<h:commandButton value="#{msg['general.submit']}" action="#{suppliesHandler.submitMessage}" styleClass="button"/>
</h:panelGroup>

</h:panelGrid>

</h:form>
<h:messages globalOnly="true" layout="table" rendered="#{suppliesHandler.sent}"/>

</ui:define>

</ui:composition>
</html>

表单地址部分的验证工作完美。只有表单这部分的消息不会显示:

<h:dataTable id="items" 
styleClass="listing_large"
value="#{supply.supplyItems}"
headerClass="heading"
var="item">
<h:column>
<f:facet name="header">
#{msg['supplies.id']}
</f:facet>
<h:outputText value="#{item.supply_id}" />
</h:column>
<h:column>
<f:facet name="header">
#{msg['supplies.amount']}
</f:facet>
<h:inputText value="#{item.amount}" id="amount" styleClass="text" size="3" maxlength="3" style="width:50px"/>
</h:column>
<h:column>
<f:facet name="header">
#{msg['supplies.description']}
</f:facet>
<h:outputText value="#{item.description}" />
</h:column>
</h:dataTable>

正在通过 BeanValidation 进行验证:

public class SupplyItem implements Serializable {

private static final long serialVersionUID = 1L;

@Id
private long supply_id;

private String description;
private int orderNo;

@Transient
@Max(value=200)
private int amount;

/*
* constructor
*/
public SupplyItem() {
super();
}

public long getSupply_id() {
return supply_id;
}

public void setSupply_id(long supply_id) {
this.supply_id = supply_id;
}

public String getDescription() {
return description;
}

public void setDescription(String description) {
this.description = description;
}

public int getOrderNo() {
return orderNo;
}

public void setOrderNo(int orderNo) {
this.orderNo = orderNo;
}

public int getAmount() {
return amount;
}

public void setAmount(int amount) {
this.amount = amount;
}

}

它实际上得到了验证,但是消息没有被显示......

12:29:45,860 Information [javax.enterprise.resource.webcontainer.jsf.renderkit] (http--127.0.0.1-8080-2) WARNUNG: FacesMessage(s) wurde(n) in die Warteschlange gestellt, aber möglicherweise nicht angezeigt.sourceId=supplies:items:0:amount[severity=(ERROR 2), summary=(Allowed maximum is 200), detail=(Allowed maximum is 200)]sourceId=supplies:items:1:amount[severity=(ERROR 2), summary=(supplies:items:1:amount: 'a' must be a number consisting of one or more digits.), detail=(supplies:items:1:amount: 'a' must be a number between -2147483648 and 2147483647 Example: 9346)]

尝试结合a动态设置输入字段的idh:message for=""不起作用,也不能通过 h:messages globalOnly="true"显示它。

任何帮助将不胜感激。

最佳答案

您还没有输入<h:message>对于数据表中任意位置的输入字段。您需要添加一个

<h:message for="amount" />

数据表中您想要显示它们的位置。

<h:messages globalOnly="true">仅显示带有 null 的消息客户端 ID,因此对于非 null 的消息肯定根本不起作用客户端 ID。您需要删除 globalOnly="true"以显示其他地方未显示的消息。

关于Jsf 2,在数据表中显示验证消息,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9452871/

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